Home / 11,917.20-17,881.08-4,131.60

Finding the Fourth Proportional to 11,917.20, 17,881.08 and 4,131.60

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Solution

The fourth proportional to 11,917.20, 17,881.08 and 4,131.60 is: 6,199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.20 : 17,881.08 = 4,131.60 : x
  2. Step 2: Convert to fraction form
    11,917.20/17,881.08 = 4,131.60/x
  3. Step 3: Cross multiply
    11,917.20x = 17,881.08 × 4,131.60
  4. Step 4: Simplify right side
    11,917.20x = 73,877,470.13
  5. Step 5: Solve for x
    x = 73,877,470.13/11,917.20
  6. Step 6: Final answer
    x = 6,199.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.